// =================================================================================================
// Copyright 2011 Twitter, Inc.
// -------------------------------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this work except in compliance with the License.
// You may obtain a copy of the License in the LICENSE file, or at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// =================================================================================================
package com.twitter.common.args.parsers;
import java.lang.reflect.Type;
import java.util.List;
import java.util.Set;
import com.google.common.base.Function;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.common.reflect.TypeToken;
import com.twitter.common.args.ArgParser;
import com.twitter.common.args.Parser;
import com.twitter.common.args.ParserOracle;
import com.twitter.common.args.Parsers;
/**
* Set parser.
*
* @author William Farner
*/
@ArgParser
public class SetParser extends TypeParameterizedParser<Set<?>> {
public SetParser() {
super(1);
}
@Override
Set<?> doParse(final ParserOracle parserOracle, String raw, List<Type> typeParams) {
final Type setType = typeParams.get(0);
final Parser<?> parser = parserOracle.get(TypeToken.of(setType));
return ImmutableSet.copyOf(Iterables.transform(Parsers.MULTI_VALUE_SPLITTER.split(raw),
new Function<String, Object>() {
@Override public Object apply(String raw) {
return parser.parse(parserOracle, setType, raw);
}
}));
}
}